Productivity tip: bring back the display menu bar icon

A keyboard shortcut (ctrl+alt+cmd+arrow up and down) lets you switch between resolutions similar to the use of the cmd+tab shortcut. I use it on my 15″ to switch between native 1920×1200 for workspace and 1440×900 for readability. In the settings I checked the option to only show Eye-Friendly (HiDPI) resolutions.